EP 0002761 B1 19820901 - IMPACT RESISTANT POLYAMIDE MOULDING BLENDS
Title (en)
IMPACT RESISTANT POLYAMIDE MOULDING BLENDS
Publication
Application
Priority
- DE 2758568 A 19771229
- DE 2801585 A 19780114
Abstract (en)
[origin: CA1121541A] The invention relates to polymer blends with improved impact strength useful as moulding compositions. The polymer blends comprise: I from 60 to 99% by weight of polyamide; II from 1 to 40% by weight of a graft product consisting of: (a) from 70 to 99% by weight of a graft substrate of at least one member selected from the group consisting of polyethylene and a copolymer of ethylene and a vinyl ester containing up to 50% by weight of the vinyl ester, and (b) from 1 to 30% by weight of grafted units of at least one member selected from the group consisting of: .alpha.) from 0 to 100% by weight of (meth) acrylic acid and .beta.) from 0 to 100% by weight of an ester of (meth) acrylic acid formedfrom an alcohol having from l to 8 carbon atoms and ?) from 0 to 30% by weight of acrylamide and ?) from 0 to 30% by weight of maleic acid anhydride, which graft products are prepared by a process of graft polymerization which comprises bringing the solvent free melted polymer used as a graft substrate into contact with oxygen or an oxygen-containing gas at a pressure of from 1 to 150 bar and at a temperature of from 80 to 300.degree.C under conditions of vigorous mixing for a maximum of 10 minutes, adding immediately thereafter the monomers which are to be grafted under conditions of vigorous mixing in the absence of oxygen and oxygen-containing gas, and removing the residual monomers after poly-merization; and III from 0 to 20% by weight of polyethylene in which blends the sum of I - III and of (a) - (b) and of .alpha. - .delta. must in each case be 100% by weight.
IPC 1-7
IPC 8 full level
C08F 255/00 (2006.01); C08L 23/00 (2006.01); C08L 51/00 (2006.01); C08L 51/02 (2006.01); C08L 77/00 (2006.01); C08L 101/00 (2006.01)
CPC (source: EP US)
C08L 77/00 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT NL
DOCDB simple family (publication)
EP 0002761 A2 19790711; EP 0002761 A3 19790725; EP 0002761 B1 19820901; CA 1121541 A 19820406; DE 2862021 D1 19821028; JP S54100454 A 19790808; US 4362846 A 19821207
DOCDB simple family (application)
EP 78101734 A 19781216; CA 318808 A 19781229; DE 2862021 T 19781216; JP 16026378 A 19781227; US 25462181 A 19810416